US6985758B2 - Mobile device power saving - Google Patents
Mobile device power saving Download PDFInfo
- Publication number
- US6985758B2 US6985758B2 US10/323,228 US32322802A US6985758B2 US 6985758 B2 US6985758 B2 US 6985758B2 US 32322802 A US32322802 A US 32322802A US 6985758 B2 US6985758 B2 US 6985758B2
- Authority
- US
- United States
- Prior art keywords
- mobile device
- beacon devices
- communications
- operable
- location
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime, expires
Links
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims description 31
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present invention relates to methods for power saving in portable or mobile communications apparatuses, in particular those configured and operable to receive data transmitted from fixed transmitters having a geographically restricted broadcast range (hereinafter generically referred to as beacons).
- the invention further relates to such apparatuses constructed or controlled to effect such methods.
- Enhancing the functionality of portable devices such as mobile telephones and personal digital assistants (PDA's) is increasingly a goal of the consumer electronics industry, with such devices being regularly carried and utilised by their owners.
- One example of this is the addition of (generally wireless) communications facilities that allow such devices to communicate with sources of additional data that the user may wish to have access to.
- such added communications facilities may take the form of a relatively short range wireless capability enabling the device to gather additional data from local beacons making available local data, such as special offers in local retail outlets, details of local events, and so forth.
- Such short (or longer) range capability is also being added to devices without an existing communications facility, such as PDA's. Examples of such enabled devices, and data delivery infrastructures supporting a variety of services, are given in the present assignees pending applications PCT EP01/06946 and EP01/13015 which are unpublished at the priority date of the present application.
- Bluetooth is a registered trademark of Ericsson
- 802.11 in conventional and short range implementations
- RFLite radio frequency
- IrDA infra red
- the mechanisms for establishing connection between a mobile device and a beacon will generally vary according to the protocol being followed: for example, a mechanism may involve an exchange of messages between mobile device and beacon to establish a full connection, or the mobile device may simply pick up data/messages that are being broadcast (with no access controls) from a beacon to all mobile devices within the broadcast range of that beacon.
- a problem that arises is that the mobile device is generally battery powered, and that battery power will be seriously reduced if the mobile device is required to continuously monitor the RF or IR (or other wireless connection means) environment to detect the presence of a beacon delivering data that the user of the mobile device may wish to have access to.
- a method for power saving in a mobile device for use in conjunction with a plurality of beacon devices wherein said mobile device detects and receives data from such beacon devices including a first one of said beacon devices when said mobile device is at a first location within a first predetermined distance from said first one of said beacon devices, and said mobile device detects movement thereof; wherein, having detected said first one of said beacon devices, said mobile device is disabled from detecting such beacon devices until said device has determined that it has moved from said first location.
- the mobile device may determine the distance it has travelled, and communications may be disabled until said mobile device has travelled at least a second predetermined distance from the first location. In this way, a mobile device which barely moves may be prevented from wastefully searching for beacons when any movement is minor and insufficient to be likely to have moved to a location where new beacons may be encountered.
- a mobile device for use in conjunction with a plurality of beacon devices, said mobile device including:
- communications means operable to detect and receive data from such beacon devices including a first one of said beacon devices when said mobile device is at a first location within a first predetermined distance from said first one of said beacon devices;
- detector means operable to detect movement of said mobile device
- said communications means having detected said first one of said beacon devices, said communications means are disabled from detecting such beacon devices until said detector means determine that said mobile device has moved from said first location.
- Said detector means may be operable to determine distance travelled by said mobile device, and said communications means is disabled until said mobile device has travelled at least a second predetermined distance from said first location.
- the detector means may be operable to determine distance travelled by said mobile device through received signal strength in data transmissions from a detected one of said beacons.
- the communications means may be operable to detect signals from two or more of said beacons, with the detector means operable to determine distance travelled through changes in received signal strength in the signals received from said two or more beacons. In such an arrangement, triangulation or other known techniques may be used to determine whether (and to what extent) the device has moved.
- the device having said communications means, may have additional communications means operable to enable said mobile device to establish communications via an alternative means to said communications means.
- Said communications means may be operable to exchange data via RF link.
- the present invention further comprises a communications system comprising a mobile device as recited above, and a plurality of said beacon devices.
- the FIGURE illustrates a method for power saving in a mobile device 10 for use in conjunction with an array of beacon devices 12 , 14 , 20 , the mobile device including a communications stage 16 operable to at least receive messages broadcast from a beacon 12 , 14 , with such communications suitably complying with a known communications protocol such as Bluetooth or 802.11. As shown, the mobile device 10 is in a position to receive data messages from beacons 12 and 14 , but outside the broadcast range (illustrated at 20 A) of beacon 20 , so that scanning for beacon messages from that beacon will produce a negative result.
- a communications stage 16 operable to at least receive messages broadcast from a beacon 12 , 14 , with such communications suitably complying with a known communications protocol such as Bluetooth or 802.11.
- the mobile device 10 is in a position to receive data messages from beacons 12 and 14 , but outside the broadcast range (illustrated at 20 A) of beacon 20 , so that scanning for beacon messages from that beacon will produce a negative result.
- the mobile device further comprises a movement detector stage 18 which may take a number of forms, and detects whether the mobile device has significantly (to within a predetermined distance or extent) changed its location since it last detected beacons 12 , 14 .
- the detection may be through periodic checks in received signal strength from one or both of the beacons 12 , 14 , or by relative signal timings for the signals from the two beacons.
- the communications stage 16 is inhibited from scanning for further beacon signals, thereby saving battery power for the mobile device.
Abstract
Description
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0130800.6A GB0130800D0 (en) | 2001-12-22 | 2001-12-22 | Mobile device power saving |
GB0130800.6 | 2001-12-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20030119504A1 US20030119504A1 (en) | 2003-06-26 |
US6985758B2 true US6985758B2 (en) | 2006-01-10 |
Family
ID=9928284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/323,228 Expired - Lifetime US6985758B2 (en) | 2001-12-22 | 2002-12-18 | Mobile device power saving |
Country Status (9)
Country | Link |
---|---|
US (1) | US6985758B2 (en) |
EP (1) | EP1461972B1 (en) |
JP (1) | JP2005513973A (en) |
CN (1) | CN1284399C (en) |
AT (1) | ATE494752T1 (en) |
AU (1) | AU2002348864A1 (en) |
DE (1) | DE60238869D1 (en) |
GB (1) | GB0130800D0 (en) |
WO (1) | WO2003056861A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040198469A1 (en) * | 2003-04-02 | 2004-10-07 | Nec Corporation | Radio network system |
US20050261037A1 (en) * | 2004-05-18 | 2005-11-24 | Raghunath Mandayam T | Conservation of battery power in mobile devices having communication capabilities |
US20090298437A1 (en) * | 2008-05-30 | 2009-12-03 | Qualcomm Incorporated | Method and apparatus for searching for signals in a wireless communication system |
US20110151824A1 (en) * | 2009-12-18 | 2011-06-23 | Hon Hai Precision Industry Co., Ltd. | Wireless communication device and method for saving energy |
US8174931B2 (en) | 2010-10-08 | 2012-05-08 | HJ Laboratories, LLC | Apparatus and method for providing indoor location, position, or tracking of a mobile computer using building information |
US8780775B2 (en) | 2010-05-28 | 2014-07-15 | Intel Corporation | Method and device for reducing power drain while camped on a wireless local area network |
US9311484B2 (en) | 2014-01-09 | 2016-04-12 | International Business Machines Corporation | Enhanced security and resource utilization in a multi-operating system environment |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8038593B2 (en) * | 2003-12-05 | 2011-10-18 | Carefusion 303, Inc. | System and method for network monitoring of multiple medical devices |
US7848270B2 (en) * | 2005-04-28 | 2010-12-07 | Ascom Tateco Ab | Minimizing energy usage in a wireless portable unit based on motion of the device |
US20080259551A1 (en) * | 2007-04-20 | 2008-10-23 | Gotive A.S. | Modular computing device |
JP4656445B2 (en) * | 2007-10-31 | 2011-03-23 | Necカシオモバイルコミュニケーションズ株式会社 | Communication terminal device and program |
JP4352085B2 (en) | 2007-12-18 | 2009-10-28 | 株式会社東芝 | Information processing apparatus and cutting control method |
EP2199818B1 (en) * | 2008-12-19 | 2019-02-20 | Koninklijke KPN N.V. | Method of determining a location of a mobile device |
US9993723B2 (en) * | 2014-09-25 | 2018-06-12 | Intel Corporation | Techniques for low power monitoring of sports game play |
JP2016090421A (en) * | 2014-11-06 | 2016-05-23 | アプリックスIpホールディングス株式会社 | Beacon signal reception system, terminal device, beacon signal reception method in beacon signal reception system and terminal device and program therein |
US10469997B2 (en) | 2016-02-26 | 2019-11-05 | Microsoft Technology Licensing, Llc | Detecting a wireless signal based on context |
US10475144B2 (en) | 2016-02-26 | 2019-11-12 | Microsoft Technology Licensing, Llc | Presenting context-based guidance using electronic signs |
US9998853B2 (en) | 2016-04-01 | 2018-06-12 | Microsoft Technology Licensing, Llc | Dynamically managing a listen list of beacon aware devices |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995029410A1 (en) | 1994-04-25 | 1995-11-02 | General Electric Company | Mobile tracking units employing motion sensors for reducing power consumption |
GB2305825A (en) | 1995-09-29 | 1997-04-16 | Nec Corp | Mobile telephone measuring channel condition at time intervals depending on velocity |
US5794146A (en) | 1996-08-14 | 1998-08-11 | Sharp Microelectronics Technology, Inc. | System and method for conserving battery power in a mobile station searching to select a serving cell |
US5799256A (en) * | 1996-07-17 | 1998-08-25 | Motorola, Inc. | Battery saving method and communication device using prediction of user location, movement and actions |
WO1999062285A1 (en) | 1998-05-26 | 1999-12-02 | Conexant Systems, Inc. | Power management system for a mobile unit by reduced neighbor cell scanning |
US6067460A (en) * | 1996-05-23 | 2000-05-23 | Nokia Mobile Phones Limited | Mobile station having enhanced standby mode |
EP1024628A1 (en) | 1999-01-29 | 2000-08-02 | International Business Machines Corporation | Adjacency-bound service discovery |
WO2000069186A1 (en) | 1999-05-07 | 2000-11-16 | Telefonaktiebolaget Lm Ericsson (Publ) | A communication system |
US6233448B1 (en) * | 1998-07-22 | 2001-05-15 | Ericsson Inc. | System, method and apparatus for automatic feature activation/deactivation based upon positioning |
US6452912B1 (en) * | 1998-07-07 | 2002-09-17 | Samsung Electronics, Co., Ltd. | Method for searching cells in mobile communication system |
US6483815B1 (en) * | 1998-02-20 | 2002-11-19 | Koninklijke Philips Electronics N.V. | Power consumption reduction method in a digital mobile radio system and a mobile radio station |
US20040204184A1 (en) * | 2002-08-28 | 2004-10-14 | Rui Lin | Method and system for location based power saving in a mobile unit |
US6847823B2 (en) * | 2000-12-20 | 2005-01-25 | Nokia Corporation | System and method for accessing local services with a mobile terminal |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6512935B1 (en) * | 2000-03-24 | 2003-01-28 | Gte Internetworking Incorporated | Energy conserving network protocol |
-
2001
- 2001-12-22 GB GBGB0130800.6A patent/GB0130800D0/en not_active Ceased
-
2002
- 2002-11-27 AT AT02781596T patent/ATE494752T1/en not_active IP Right Cessation
- 2002-11-27 JP JP2003557241A patent/JP2005513973A/en not_active Withdrawn
- 2002-11-27 WO PCT/IB2002/005001 patent/WO2003056861A1/en active Application Filing
- 2002-11-27 DE DE60238869T patent/DE60238869D1/en not_active Expired - Lifetime
- 2002-11-27 AU AU2002348864A patent/AU2002348864A1/en not_active Abandoned
- 2002-11-27 EP EP02781596A patent/EP1461972B1/en not_active Expired - Lifetime
- 2002-11-27 CN CNB028256034A patent/CN1284399C/en not_active Expired - Fee Related
- 2002-12-18 US US10/323,228 patent/US6985758B2/en not_active Expired - Lifetime
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995029410A1 (en) | 1994-04-25 | 1995-11-02 | General Electric Company | Mobile tracking units employing motion sensors for reducing power consumption |
GB2305825A (en) | 1995-09-29 | 1997-04-16 | Nec Corp | Mobile telephone measuring channel condition at time intervals depending on velocity |
US6067460A (en) * | 1996-05-23 | 2000-05-23 | Nokia Mobile Phones Limited | Mobile station having enhanced standby mode |
US5799256A (en) * | 1996-07-17 | 1998-08-25 | Motorola, Inc. | Battery saving method and communication device using prediction of user location, movement and actions |
US5794146A (en) | 1996-08-14 | 1998-08-11 | Sharp Microelectronics Technology, Inc. | System and method for conserving battery power in a mobile station searching to select a serving cell |
US6483815B1 (en) * | 1998-02-20 | 2002-11-19 | Koninklijke Philips Electronics N.V. | Power consumption reduction method in a digital mobile radio system and a mobile radio station |
WO1999062285A1 (en) | 1998-05-26 | 1999-12-02 | Conexant Systems, Inc. | Power management system for a mobile unit by reduced neighbor cell scanning |
US6452912B1 (en) * | 1998-07-07 | 2002-09-17 | Samsung Electronics, Co., Ltd. | Method for searching cells in mobile communication system |
US6233448B1 (en) * | 1998-07-22 | 2001-05-15 | Ericsson Inc. | System, method and apparatus for automatic feature activation/deactivation based upon positioning |
EP1024628A1 (en) | 1999-01-29 | 2000-08-02 | International Business Machines Corporation | Adjacency-bound service discovery |
WO2000069186A1 (en) | 1999-05-07 | 2000-11-16 | Telefonaktiebolaget Lm Ericsson (Publ) | A communication system |
US6847823B2 (en) * | 2000-12-20 | 2005-01-25 | Nokia Corporation | System and method for accessing local services with a mobile terminal |
US20040204184A1 (en) * | 2002-08-28 | 2004-10-14 | Rui Lin | Method and system for location based power saving in a mobile unit |
Non-Patent Citations (1)
Title |
---|
By Christian Rohl et al. Entitled: A Short Look on Power Saving Mechanisms in the Wireless LAN Standard Draft IEEE 802.11. WINLAB Workshop on 3<SUP>rd </SUP>Generation Wireless Information Networks, Piscataway, NJ, 1997, Technical University Berlin, Telecommunication Networks Group, pp. 183-188, no month. |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7532914B2 (en) * | 2003-04-02 | 2009-05-12 | Nec Corporation | Radio network system |
US20040198469A1 (en) * | 2003-04-02 | 2004-10-07 | Nec Corporation | Radio network system |
US20050261037A1 (en) * | 2004-05-18 | 2005-11-24 | Raghunath Mandayam T | Conservation of battery power in mobile devices having communication capabilities |
US20090298437A1 (en) * | 2008-05-30 | 2009-12-03 | Qualcomm Incorporated | Method and apparatus for searching for signals in a wireless communication system |
US8175567B2 (en) * | 2008-05-30 | 2012-05-08 | Qualcomm Incorporated | Method and apparatus for searching for signals in a wireless communication system |
US20110151824A1 (en) * | 2009-12-18 | 2011-06-23 | Hon Hai Precision Industry Co., Ltd. | Wireless communication device and method for saving energy |
US8780775B2 (en) | 2010-05-28 | 2014-07-15 | Intel Corporation | Method and device for reducing power drain while camped on a wireless local area network |
US8842496B2 (en) | 2010-10-08 | 2014-09-23 | HJ Laboratories, LLC | Providing indoor location, position, or tracking of a mobile computer using a room dimension |
US9182494B2 (en) | 2010-10-08 | 2015-11-10 | HJ Laboratories, LLC | Tracking a mobile computer indoors using wi-fi and motion sensor information |
US8284100B2 (en) | 2010-10-08 | 2012-10-09 | HJ Laboratories, LLC | Providing indoor location, position, or tracking of a mobile computer using sensors |
US8174931B2 (en) | 2010-10-08 | 2012-05-08 | HJ Laboratories, LLC | Apparatus and method for providing indoor location, position, or tracking of a mobile computer using building information |
US9110159B2 (en) | 2010-10-08 | 2015-08-18 | HJ Laboratories, LLC | Determining indoor location or position of a mobile computer using building information |
US9116230B2 (en) | 2010-10-08 | 2015-08-25 | HJ Laboratories, LLC | Determining floor location and movement of a mobile computer in a building |
US9176230B2 (en) | 2010-10-08 | 2015-11-03 | HJ Laboratories, LLC | Tracking a mobile computer indoors using Wi-Fi, motion, and environmental sensors |
US8395968B2 (en) | 2010-10-08 | 2013-03-12 | HJ Laboratories, LLC | Providing indoor location, position, or tracking of a mobile computer using building information |
US9244173B1 (en) * | 2010-10-08 | 2016-01-26 | Samsung Electronics Co. Ltd. | Determining context of a mobile computer |
US10962652B2 (en) | 2010-10-08 | 2021-03-30 | Samsung Electronics Co., Ltd. | Determining context of a mobile computer |
US9684079B2 (en) | 2010-10-08 | 2017-06-20 | Samsung Electronics Co., Ltd. | Determining context of a mobile computer |
US10107916B2 (en) | 2010-10-08 | 2018-10-23 | Samsung Electronics Co., Ltd. | Determining context of a mobile computer |
US10261565B2 (en) | 2014-01-09 | 2019-04-16 | International Business Machines Corporation | Enhanced security and resource utilization in a multi-operating system environment |
US10310581B2 (en) | 2014-01-09 | 2019-06-04 | International Business Machines Corporation | Enhanced security and resource utilization in a multi-operating system environment |
US9311484B2 (en) | 2014-01-09 | 2016-04-12 | International Business Machines Corporation | Enhanced security and resource utilization in a multi-operating system environment |
Also Published As
Publication number | Publication date |
---|---|
EP1461972A1 (en) | 2004-09-29 |
ATE494752T1 (en) | 2011-01-15 |
GB0130800D0 (en) | 2002-02-06 |
CN1284399C (en) | 2006-11-08 |
DE60238869D1 (en) | 2011-02-17 |
EP1461972B1 (en) | 2011-01-05 |
AU2002348864A1 (en) | 2003-07-15 |
CN1606890A (en) | 2005-04-13 |
US20030119504A1 (en) | 2003-06-26 |
JP2005513973A (en) | 2005-05-12 |
WO2003056861A1 (en) | 2003-07-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6985758B2 (en) | Mobile device power saving | |
US6961594B2 (en) | Mobile device power saving | |
US7522049B2 (en) | Wireless local area network (WLAN) method and system for presence detection and location finding | |
EP1527651B1 (en) | System for locating a mobile unit | |
EP1504627B1 (en) | Radio system, master station and method of operating the radio system | |
KR20010041081A (en) | Location beacon system | |
US20020082017A1 (en) | Mobile communication terminal unit, and handoff control method thereof | |
WO2002076113A3 (en) | Beacon infrastructure | |
JP4676490B2 (en) | Interference mitigation in mobile units with position transmitters | |
US9008649B2 (en) | Radio terminal and radio communication method | |
CN106550323B (en) | Method for determining the geographical position of a device | |
WO2004093337A1 (en) | Motion detecting wireless receiver and signal monitoring method therefor | |
EP2421296A3 (en) | Frequency sharing method, receiving station and transmitting station | |
US20080075034A1 (en) | Wireless communication method, wireless bridge device and wireless communication system | |
KR101581327B1 (en) | System and method for location awareness of mobile device, and system and method for communication of between mobile devices | |
KR20090089301A (en) | Method and apparatus of passive scanning | |
WO2010150434A1 (en) | Wireless reception device, wireless transmission device, and method for deciding timing of beacon reception | |
GB2388276B (en) | A wireless communicaton system, a wireless communication device and method of monitoring therefor | |
JP3862546B2 (en) | Wireless communication terminal device | |
JP2000092570A (en) | Base station device, mobile station device, mobile communication system using these devices, and mobile communication method | |
US20030186677A1 (en) | Apparatus and method for directionalized active beacon pinging utilizing personal communication device | |
JP2647118B2 (en) | Wireless communication method | |
KR20040051712A (en) | Inquiry method in bluetooth system | |
KR20020050532A (en) | Method for transmitting-receiving data of bluetooth system | |
JPH04165725A (en) | Radio system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KONINKLIJKE PHILIPS ELECTRONICS N. V., NETHERLANDS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:RANKIN, PAUL J.;REEL/FRAME:013598/0451 Effective date: 20021105 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: IPG ELECTRONICS 503 LIMITED Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KONINKLIJKE PHILIPS ELECTRONICS N.V.;REEL/FRAME:022203/0791 Effective date: 20090130 Owner name: IPG ELECTRONICS 503 LIMITED, GUERNSEY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KONINKLIJKE PHILIPS ELECTRONICS N.V.;REEL/FRAME:022203/0791 Effective date: 20090130 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
AS | Assignment |
Owner name: PENDRAGON WIRELESS LLC, WASHINGTON Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:IPG ELECTRONICS 503 LIMITED;REEL/FRAME:028594/0224 Effective date: 20120410 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
FEPP | Fee payment procedure |
Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 12 |
|
AS | Assignment |
Owner name: UNILOC LUXEMBOURG S.A., LUXEMBOURG Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PENDRAGON WIRELESS LLC;REEL/FRAME:045338/0601 Effective date: 20180131 |
|
AS | Assignment |
Owner name: UNILOC 2017 LLC, DELAWARE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNILOC LUXEMBOURG S.A.;REEL/FRAME:046532/0088 Effective date: 20180503 |